Public Works-Engineering & Surveying designs and performs contract construction of road and bridge improvements. The Engineering Section issues encroachment permits (for use of the County road right-of-way), transportation permits (for transporting oversize and overweight loads on County roads), and assembly permits (for such things as bicycle races or filming). This section also performs traffic counts and speed surveys on County roads. The Surveying Section reviews and approves Records of Survey, Subdivision Maps, and Parcel Maps, and provides an index and copies of all survey maps filed in the County. This section also provides historical survey information and reviews private land development applications for compliance with existing regulations.

Copies of filed maps can be purchased during normal business hours. Small orders of maps can usually be purchased over the counter on a while-you-wait basis. Larger map orders may require a day or two to complete.